Melania Trump says she might be world's most bullied person, there are people in White House she doesn't trust

US first lady Melania Trump says she could be "the most bullied person" in the world, judging by "what people are saying about me".

Key points:

US first lady Melania Trump promoting her Be Best campaign focused on social media and online behaviour

Says there are some people in the White House she and the President can't trust

Trump administration has dealt with anonymous senior official's newspaper column critical of the President

She made the remark during a television interview in which she promoted her Be Best initiatives, which take on online bullying. Critics have pointed out that her husband, President Donald Trump, routinely mocks people for their looks and for what he says is a lack of talent or intelligence.

"I could say I'm the most bullied person in the world," Ms Trump said in the interview segment that aired Thursday on Good Morning America.

Ms Trump said her Be Best campaign is focusing on social media and online behaviour in part because of "what people are saying about me".

"We need to educate the children of social emotional behaviour so when they grow up … they know how to deal with those issues," she said.

The first lady also said there are people in the White House who she and the President can't trust. She didn't name names but said she let her husband know about them.

"Well," she said, "some people, they don't work there anymore."

Asked if some untrustworthy people still work in the White House, she said: "Yes."